I will posit that there exist women who don't base their self-worth and happiness entirely on the approval and acceptance of a man. I will further posit that there are women who aren't married by 30 because they haven't met someone they want to marry yet and are totally OK with that.
Later first marriages are more likely to last anyway.
(And do men really want to be settled for? Like "sure I'll marry you; you're not totally horrible"?)